Flat Extensions of Positive Moment Matrices: Recursively Generated Relations

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Publisher : American Mathematical Soc.
ISBN 13 : 0821808699
Total Pages : 73 pages
Book Rating : 4.8/5 (218 download)

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Book Synopsis Flat Extensions of Positive Moment Matrices: Recursively Generated Relations by : Raúl E. Curto

Download or read book Flat Extensions of Positive Moment Matrices: Recursively Generated Relations written by Raúl E. Curto and published by American Mathematical Soc.. This book was released on 1998 with total page 73 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this book, the authors develop new computational tests for existence and uniqueness of representing measures $\mu$ in the Truncated Complex Moment Problem: $\gamma {ij}=\int \bar zizj\, d\mu$ $(0\le i+j\le 2n)$. Conditions for the existence of finitely atomic representing measures are expressed in terms of positivity and extension properties of the moment matrix $M(n)(\gamma )$ associated with $\gamma \equiv \gamma {(2n)}$: $\gamma {00}, \dots ,\gamma {0,2n},\dots ,\gamma {2n,0}$, $\gamma {00}>0$. This study includes new conditions for flat (i.e., rank-preserving) extensions $M(n+1)$ of $M(n)\ge 0$; each such extension corresponds to a distinct rank $M(n)$-atomic representing measure, and each such measure is minimal among representing measures in terms of the cardinality of its support. For a natural class of moment matrices satisfying the tests of recursive generation, recursive consistency, and normal consistency, the existence problem for minimal representing measures is reduced to the solubility of small systems of multivariable algebraic equations. In a variety of applications, including cases of the quartic moment problem ($n=2$), the text includes explicit contructions of minimal representing measures via the theory of flat extensions. Additional computational texts are used to prove non-existence of representing measures or the non-existence of minimal representing measures. These tests are used to illustrate, in very concrete terms, new phenomena, associated with higher-dimensional moment problems that do not appear in the classical one-dimensional moment problem.

Analysis of Operators on Function Spaces

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Publisher : Springer
ISBN 13 : 3030146405
Total Pages : 283 pages
Book Rating : 4.0/5 (31 download)

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Book Synopsis Analysis of Operators on Function Spaces by : Alexandru Aleman

Download or read book Analysis of Operators on Function Spaces written by Alexandru Aleman and published by Springer. This book was released on 2019-05-30 with total page 283 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains both expository articles and original research in the areas of function theory and operator theory. The contributions include extended versions of some of the lectures by invited speakers at the conference in honor of the memory of Serguei Shimorin at the Mittag-Leffler Institute in the summer of 2018. The book is intended for all researchers in the fields of function theory, operator theory and complex analysis in one or several variables. The expository articles reflecting the current status of several well-established and very dynamical areas of research will be accessible and useful to advanced graduate students and young researchers in pure and applied mathematics, and also to engineers and physicists using complex analysis methods in their investigations.

Nonselfadjoint Operator Algebras, Operator Theory, and Related Topics

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Publisher : Birkhäuser
ISBN 13 : 3034887795
Total Pages : 213 pages
Book Rating : 4.0/5 (348 download)

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Book Synopsis Nonselfadjoint Operator Algebras, Operator Theory, and Related Topics by : H. Bercovicii

Download or read book Nonselfadjoint Operator Algebras, Operator Theory, and Related Topics written by H. Bercovicii and published by Birkhäuser. This book was released on 2012-12-06 with total page 213 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume, dedicated to Carl Pearcy on the occasion of his 60th birthday, presents recent results in operator theory, nonselfadjoint operator algebras, measure theory and the theory of moments. The articles on these subjects have been contributed by leading area experts, many of whom were associated with Carl Pearcy as students or collaborators. The book testifies to his multifaceted interests and includes a biographical sketch and a list of publications.

The Defect Relation of Meromorphic Maps on Parabolic Manifolds

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Publisher : American Mathematical Soc.
ISBN 13 : 0821810693
Total Pages : 95 pages
Book Rating : 4.8/5 (218 download)

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Book Synopsis The Defect Relation of Meromorphic Maps on Parabolic Manifolds by : George Lawrence Ashline

Download or read book The Defect Relation of Meromorphic Maps on Parabolic Manifolds written by George Lawrence Ashline and published by American Mathematical Soc.. This book was released on 1999 with total page 95 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is intended for graduate students and research mathematicians working in several complex variables and analytic spaces.

Complexes Associated to Two Vectors and a Rectangular Matrix

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Publisher : American Mathematical Soc.
ISBN 13 : 0821820737
Total Pages : 97 pages
Book Rating : 4.8/5 (218 download)

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Book Synopsis Complexes Associated to Two Vectors and a Rectangular Matrix by : Andrew R. Kustin

Download or read book Complexes Associated to Two Vectors and a Rectangular Matrix written by Andrew R. Kustin and published by American Mathematical Soc.. This book was released on 2000 with total page 97 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is intended for graduate student and research mathematicians interested in commutative rings and algebras.

Optimization of Polynomials in Non-Commuting Variables

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Publisher : Springer
ISBN 13 : 3319333380
Total Pages : 118 pages
Book Rating : 4.3/5 (193 download)

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Book Synopsis Optimization of Polynomials in Non-Commuting Variables by : Sabine Burgdorf

Download or read book Optimization of Polynomials in Non-Commuting Variables written by Sabine Burgdorf and published by Springer. This book was released on 2016-06-07 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents recent results on positivity and optimization of polynomials in non-commuting variables. Researchers in non-commutative algebraic geometry, control theory, system engineering, optimization, quantum physics and information science will find the unified notation and mixture of algebraic geometry and mathematical programming useful. Theoretical results are matched with algorithmic considerations; several examples and information on how to use NCSOStools open source package to obtain the results provided. Results are presented on detecting the eigenvalue and trace positivity of polynomials in non-commuting variables using Newton chip method and Newton cyclic chip method, relaxations for constrained and unconstrained optimization problems, semidefinite programming formulations of the relaxations and finite convergence of the hierarchies of these relaxations, and the practical efficiency of algorithms.

Algebraic and Strong Splittings of Extensions of Banach Algebras

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Publisher : American Mathematical Soc.
ISBN 13 : 0821810588
Total Pages : 129 pages
Book Rating : 4.8/5 (218 download)

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Book Synopsis Algebraic and Strong Splittings of Extensions of Banach Algebras by : William G. Bade

Download or read book Algebraic and Strong Splittings of Extensions of Banach Algebras written by William G. Bade and published by American Mathematical Soc.. This book was released on 1999 with total page 129 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this volume, the authors address the following: Let $A$ be a Banach algebra, and let $\sum\:\ 0\rightarrow I\rightarrow\frak A\overset\pi\to\longrightarrow A\rightarrow 0$ be an extension of $A$, where $\frak A$ is a Banach algebra and $I$ is a closed ideal in $\frak A$. The extension splits algebraically (respectively, splits strongly) if there is a homomorphism (respectively, continuous homomorphism) $\theta\: A\rightarrow\frak A$ such that $\pi\circ\theta$ is the identity on $A$. Consider first for which Banach algebras $A$ it is true that every extension of $A$ in a particular class of extensions splits, either algebraically or strongly, and second for which Banach algebras it is true that every extension of $A$ in a particular class which splits algebraically also splits strongly. These questions are closely related to the question when the algebra $\frak A$ has a (strong) Wedderburn decomposition. The main technique for resolving these questions involves the Banach cohomology group $\cal H2(A,E)$ for a Banach $A$-bimodule $E$, and related cohomology groups. Later chapters are particularly concerned with the case where the ideal $I$ is finite-dimensional. Results are obtained for many of the standard Banach algebras $A$.

Matrix Completions, Moments, and Sums of Hermitian Squares

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Publisher : Princeton University Press
ISBN 13 : 1400840597
Total Pages : 533 pages
Book Rating : 4.4/5 (8 download)

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Book Synopsis Matrix Completions, Moments, and Sums of Hermitian Squares by : Mihály Bakonyi

Download or read book Matrix Completions, Moments, and Sums of Hermitian Squares written by Mihály Bakonyi and published by Princeton University Press. This book was released on 2011-07-18 with total page 533 pages. Available in PDF, EPUB and Kindle. Book excerpt: Intensive research in matrix completions, moments, and sums of Hermitian squares has yielded a multitude of results in recent decades. This book provides a comprehensive account of this quickly developing area of mathematics and applications and gives complete proofs of many recently solved problems. With MATLAB codes and more than 200 exercises, the book is ideal for a special topics course for graduate or advanced undergraduate students in mathematics or engineering, and will also be a valuable resource for researchers. Often driven by questions from signal processing, control theory, and quantum information, the subject of this book has inspired mathematicians from many subdisciplines, including linear algebra, operator theory, measure theory, and complex function theory. In turn, the applications are being pursued by researchers in areas such as electrical engineering, computer science, and physics. The book is self-contained, has many examples, and for the most part requires only a basic background in undergraduate mathematics, primarily linear algebra and some complex analysis. The book also includes an extensive discussion of the literature, with close to 600 references from books and journals from a wide variety of disciplines.

Realization of Vector Fields and Dynamics of Spatially Homogeneous Parabolic Equations

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Publisher : American Mathematical Soc.
ISBN 13 : 0821811827
Total Pages : 97 pages
Book Rating : 4.8/5 (218 download)

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Book Synopsis Realization of Vector Fields and Dynamics of Spatially Homogeneous Parabolic Equations by : Edward Norman Dancer

Download or read book Realization of Vector Fields and Dynamics of Spatially Homogeneous Parabolic Equations written by Edward Norman Dancer and published by American Mathematical Soc.. This book was released on 1999 with total page 97 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is intended for graduate students and research mathematicians working in partial differential equations.

Morava $K$-Theories and Localisation

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Publisher : American Mathematical Soc.
ISBN 13 : 0821810790
Total Pages : 114 pages
Book Rating : 4.8/5 (218 download)

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Book Synopsis Morava $K$-Theories and Localisation by : Mark Hovey

Download or read book Morava $K$-Theories and Localisation written by Mark Hovey and published by American Mathematical Soc.. This book was released on 1999 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is intended for graduate students and research mathematicians working in group theory and generalizations.

Simplicial Dynamical Systems

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Publisher : American Mathematical Soc.
ISBN 13 : 0821813838
Total Pages : 215 pages
Book Rating : 4.8/5 (218 download)

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Book Synopsis Simplicial Dynamical Systems by : Ethan Akin

Download or read book Simplicial Dynamical Systems written by Ethan Akin and published by American Mathematical Soc.. This book was released on 1999 with total page 215 pages. Available in PDF, EPUB and Kindle. Book excerpt: A simplicial dynamical system is a simplicial map $g: K DEGREES* \rightarrow K$ where $K$ is a finite simplicial complex triangulating a compact polyhedron $X$ and $K DEGREES*$ is a proper subdivision of $K$, for example, the barycentric or any further subdivision. the dynamics of the asociated piecewise linear map $g: X X$ can be analyzed by using certain naturally related subshifts of finite type. Any continous map on $X$ can be $C DEGREES0$ approximated by such systems. Other examples yield interesting

Renormalized Self-Intersection Local Times and Wick Power Chaos Processes

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Publisher : American Mathematical Soc.
ISBN 13 : 0821813404
Total Pages : 138 pages
Book Rating : 4.8/5 (218 download)

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Book Synopsis Renormalized Self-Intersection Local Times and Wick Power Chaos Processes by : Michael B. Marcus

Download or read book Renormalized Self-Intersection Local Times and Wick Power Chaos Processes written by Michael B. Marcus and published by American Mathematical Soc.. This book was released on 1999 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sufficient conditions are obtained for the continuity of renormalized self-intersection local times for the multiple intersections of a large class of strongly symmetric L vy processes in $R DEGREESm$, $m=1,2$. In $R DEGREES2$ these include Brownian motion and stable processes of index greater than 3/2, as well as many processes in their domains of attraction. In $R DEGREES1$ these include stable processes of index $3/4

A Computation of $\delta ^1_5$

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Publisher : American Mathematical Soc.
ISBN 13 : 082181091X
Total Pages : 109 pages
Book Rating : 4.8/5 (218 download)

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Book Synopsis A Computation of $\delta ^1_5$ by : Steve Jackson

Download or read book A Computation of $\delta ^1_5$ written by Steve Jackson and published by American Mathematical Soc.. This book was released on 1999 with total page 109 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is intended for graduate students and research mathematicians working in logic and foundations

Dynamical Zeta Functions, Nielsen Theory and Reidemeister Torsion

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Publisher : American Mathematical Soc.
ISBN 13 : 0821820907
Total Pages : 165 pages
Book Rating : 4.8/5 (218 download)

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Book Synopsis Dynamical Zeta Functions, Nielsen Theory and Reidemeister Torsion by : Alexander Fel'shtyn

Download or read book Dynamical Zeta Functions, Nielsen Theory and Reidemeister Torsion written by Alexander Fel'shtyn and published by American Mathematical Soc.. This book was released on 2000 with total page 165 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the paper we study new dynamical zeta functions connected with Nielsen fixed point theory. The study of dynamical zeta functions is part of the theory of dynamical systems, but it is also intimately related to algebraic geometry, number theory, topology and statistical mechanics. The paper consists of four parts. Part I presents a brief account of the Nielsen fixed point theory. Part II deals with dynamical zeta functions connected with Nielsen fixed point theory. Part III is concerned with analog of Dold congruences for the Reidemeister and Nielsen numbers. In Part IV we explain how dynamical zeta functions give rise to the Reidemeister torsion, a very important topological invariant which has useful applications in knots theory,quantum field theory and dynamical systems.

Rational Curves on Quasi-Projective Surfaces

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Publisher : American Mathematical Soc.
ISBN 13 : 0821810960
Total Pages : 169 pages
Book Rating : 4.8/5 (218 download)

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Book Synopsis Rational Curves on Quasi-Projective Surfaces by : Seán Keel

Download or read book Rational Curves on Quasi-Projective Surfaces written by Seán Keel and published by American Mathematical Soc.. This book was released on 1999 with total page 169 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is intended for graduate students and research mathematicians working in algebraic geometry

Norms on Possibilities. I: Forcing with Trees and Creatures

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Publisher : American Mathematical Soc.
ISBN 13 : 0821811800
Total Pages : 186 pages
Book Rating : 4.8/5 (218 download)

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Book Synopsis Norms on Possibilities. I: Forcing with Trees and Creatures by : Andrzej Rosłanowski

Download or read book Norms on Possibilities. I: Forcing with Trees and Creatures written by Andrzej Rosłanowski and published by American Mathematical Soc.. This book was released on 1999 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is intended for graduate students and research mathematicians interested in mathematical logic and foundations.

Proper Maps of Toposes

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Publisher : American Mathematical Soc.
ISBN 13 : 0821821687
Total Pages : 125 pages
Book Rating : 4.8/5 (218 download)

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Book Synopsis Proper Maps of Toposes by : Ieke Moerdijk

Download or read book Proper Maps of Toposes written by Ieke Moerdijk and published by American Mathematical Soc.. This book was released on 2000 with total page 125 pages. Available in PDF, EPUB and Kindle. Book excerpt: We develop the theory of compactness of maps between toposes, together with associated notions of separatedness. This theory is built around two versions of "propriety" for topos maps, introduced here in a parallel fashion. The first, giving what we simply call "proper" maps, is a relatively weak condition due to Johnstone. The second kind of proper maps, here called "tidy", satisfy a stronger condition due to Tierney and Lindgren. Various forms of the Beck-Chevalley condition for (lax) fibered product squares of toposes play a central role in the development of the theory. Applications include a version of the Reeb stability theorem for toposes, a characterization of hyperconnected Hausdorff toposes as classifying toposes of compact groups, and of strongly Hausdorff coherent toposes as classifiying toposes of profinite groupoids. Our results also enable us to develop further particular aspects of the factorization theory of geometric morphisms studied by Johnstone. Our final application is a (so-called lax) descent theorem for tidy maps between toposes. This theorem implies the lax descent theorem for coherent toposes, conjectured by Makkai and proved earlier by Zawadowski.